Содержание
- 2. Introduction to dermatoglyphi All too often when we teach genetics we limit ourselves to the “tried
- 3. Dermatoglyphi and development Dermal ridges originates from fetal volar pads composed of mesenchymal tissue starting at
- 4. Fingerprinting A fingerprint is an individual characteristic- -no two have yet been found to possess identical
- 5. Anatomy of the Fingerprint Skin is composed of layers of cells. Epidermis (outer portion) and dermis
- 6. Types of fingerprints
- 7. Sir William Hershel-1856 He was the first to use fingerprints. An English Chief Magistrate in India
- 8. Sir Francis Galton-1888 Sir Francis Galton, a British anthropologist and a cousin of Charles Darwin, began
- 9. Delta The ridge point nearest the type-line divergence is the DELTA. -Triangular in shape. -ALL LOOPS
- 10. Core Core=center of the pattern
- 11. Whorls Whorls-4 distinct groups: — Plain — Central pocket — Double loop — Accidental All whorl
- 12. Arches Arches least common has 2 patterns- plain arches and tented. Do not have: —type lines
- 13. Methods of detecting fingerprints The method of choice will depend on the surface being lifted or
- 14. Ultraviolet imaging systems 35mm black and white film. Scene scope excels at detecting prints on surfaces
- 15. Ninhydrin The most cost effective chemical development method is Ninhydrin. Ninhydrin is used on paper, cardboard,
- 16. Preservation of developed prints Once visualised, it must be permanently preserved for future comparisons and possible
- 17. Permanent record of prints If on small surface-transport without destroying the print. Protect with cellophane bag.
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